.columns_container {
  display: flex;
  flex-direction: column;
  width: 274px;
  height: 418px;
  padding: 16px;
  overflow: hidden;
  background-color: var(--bg-main);
  border-radius: 5px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.75);
  &_header,
  &_footer {
    flex-shrink: 0;
  }
  &_tree {
    flex-grow: 1;
    width: 100%;
    overflow: hidden;
    overflow-y: auto;
  }
  &_footer {
    text-align: right;
  }
}
